Home / 39,040.10-53,875.77-21,135.49

Finding the Fourth Proportional to 39,040.10, 53,875.77 and 21,135.49

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Solution

The fourth proportional to 39,040.10, 53,875.77 and 21,135.49 is: 29,167.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,040.10 : 53,875.77 = 21,135.49 : x
  2. Step 2: Convert to fraction form
    39,040.10/53,875.77 = 21,135.49/x
  3. Step 3: Cross multiply
    39,040.10x = 53,875.77 × 21,135.49
  4. Step 4: Simplify right side
    39,040.10x = 1,138,690,663.39
  5. Step 5: Solve for x
    x = 1,138,690,663.39/39,040.10
  6. Step 6: Final answer
    x = 29,167.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.